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High-reliability automatic speed changing device for electric automobile

By using the linkage switching technology of planetary gear mechanism and clutch in the electric vehicle gearbox, the problems of hydraulic control complexity and high cost are solved, and efficient, reliable power transmission and simplified manufacturing process are achieved.

Active Publication Date: 2021-11-26
FUJIAN ZHONGQING AUTOMOBILE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved by the present invention is: the hydraulic control structure in the multi-gear gearbox of the existing electric vehicle is relatively complicated, the manufacture is difficult, and the use cost is high

Method used

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Experimental program
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Effect test

Embodiment 1

[0055] An automatic transmission device for electric vehicles with high reliability, comprising a planetary gear mechanism 1, an output shaft 2, a first clutch 3, a second clutch 4 and a shift mechanism 5 arranged in a housing 6;

[0056] The output shaft 2 is driven by a motor 7 through a planetary gear mechanism 1;

[0057] The shift mechanism 5 controls the linkage switching between the first clutch 3 and the second clutch 4, and the linkage switching between the first clutch 3 and the second clutch 4 controls the locking and unlocking of the planetary gear mechanism 1 so as to realize two switch between gears;

[0058] The planetary gear mechanism 1 includes a first sun gear 11, a second sun gear 12, a planetary gear and a planet carrier 15. The first sun gear 11 is sheathed on the output shaft 2 and is rotationally connected with the output shaft 2. The first sun gear 11 is driven by the motor 7, and one end of the first sun gear 11 and the planetary gear meshes with eac...

Embodiment 2

[0067] An automatic transmission device for electric vehicles with high reliability, comprising a planetary gear mechanism 1, an output shaft 2, a first clutch 3, a second clutch 4 and a shift mechanism 5 arranged in a housing 6;

[0068] The output shaft 2 is driven by a motor 7 through a planetary gear mechanism 1;

[0069] The shift mechanism 5 controls the linkage switching between the first clutch 3 and the second clutch 4, and the linkage switching between the first clutch 3 and the second clutch 4 controls the locking and unlocking of the planetary gear mechanism 1 so as to realize two switch between gears;

[0070] The planetary gear mechanism 1 includes a first sun gear 11, a second sun gear 12, a planetary gear and a planet carrier 15. The first sun gear 11 is sheathed on the output shaft 2 and is rotationally connected with the output shaft 2. The first sun gear 11 is driven by the motor 7, and one end of the first sun gear 11 and the planetary gear meshes with eac...

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Abstract

The invention relates to the technical field of automobile transmission, in particular to a high-reliability automatic speed changing device for an electric automobile. The high-reliability automatic speed changing device comprises a planet wheel mechanism, an output shaft, a first clutch, a second clutch and a gear shifting mechanism which are arranged in a shell. According to the automatic speed changing device for the electric automobile, linkage switching between the two clutches can be achieved by operating one gear shifting mechanism, the requirement for the operation precision of the gear shifting mechanism is low, meanwhile, no rotating speed difference exists between a pressing disc and a lifting plate, use of a release bearing is avoided, meanwhile, a complex hydraulic gear shifting mechanism is avoided, and the advantages of simple manufacturing, low cost, high reliability and the like are realized; at the second gear, all planet wheel mechanisms are locked, gear meshing efficiency loss is avoided, and the overall power transmission efficiency is high; the bearing capacity is high; and the weight is light, the structure is compact, parts are few, and maintenance is simple.

Description

[0001] This case is a divisional application based on the invention patent with the application date of March 9, 2020, the application number 2020101563146, and the title "An Automatic Transmission Device for Electric Vehicles" as the parent case. technical field [0002] The invention relates to the technical field of automobile transmission, in particular to an automatic transmission device for electric automobiles with high reliability. Background technique [0003] With the development of the new energy vehicle industry, electric vehicles need to adapt to more road conditions and have a longer cruising range. At present, most of the transmission parts of electric vehicles are only equipped with fixed speed ratio gearboxes. The fixed speed ratio gearboxes put forward high requirements for the design of the drive motor. High torque, high efficiency under high-speed working conditions, high quietness and so on. This is difficult to meet simultaneously under the existing ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H3/46F16H61/30F16H61/32F16H61/36
CPCF16H3/46F16H61/30F16H61/32F16H61/36F16H2061/326
Inventor 陈帆蔡有建
Owner FUJIAN ZHONGQING AUTOMOBILE TECH CO LTD
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